Improvement in babe-bubning stoves



v bottom upper base-plate B of the stove.

\ l @eine gieten geteilt @ffice DAVID STUART AND LEWIS BRIDGE, OFPHILADELPHI, PENNSYLVANIA, ASSIGNORS TO STUART.l PETERSON d, CO., OF SAME PLAGE.

Letters Patent No. 77.5459. dated May 5,1868.

v IMPROVEMENT INj BASEBUBNING STOVES.

TO ALL WHOM 'IT MAY CONCERN:

Be it known that we, DAVID STUART and Lnwrs Binnen, ot Philadelphia, Pennsylvania, have invented an Improved Heating-Stove; and we do hereby clear, and exact description ci' the same.

Our invention consists oi" certain improvements in heating-stoves, fully described hereafter, our iinprovements being such that large volumes of cold air are introduced to the `stove at di`erent points, thoroughly distributed und circulated throughout, and heated in the said stove, and rapidly discharged in one volume into e. chamber at the top of the stove, from which the heated air may be conveyed to different pointe.

In order to enable others skilled in the art to make and use our invention, we will now-proceed to describe its construction and operation, reference being had to the accompanying drawing, which forms a partei' this specification, and in which- Figure l, Drawing No. 1,.is a front view of eurixnproved stove.

Figure 2, a sectional plan on the line 1-2, Iig: l.

Figure 3, a. sectional plan on the line 3-4, iig. 1. -@ignite a sectional plan on the line 5-6, fig. l.

ignre 5, Brewing No. 2, a vertical section on the line 7-8, iig. fi.

igure 5, e sectional plan on the line 9-l0, iig. 5. gure T, a ver-tical section on the line' 11-12, iig. 5.

s igure t-, a perspective viewof part of the stove.

A is the bottom-'plate of the stove, between which and the plate B, which carries the grate, a, intervenes the ashpit C, bounded laterally by the casing e c c, iig. 3, and between the ash-pit and the outer casing D of this part of the stoveintervcnes the chamber E, to which nir is admitted from below through openings e in the ycounty of Philadelphia, State of declare the following, to be a full,

0n this plate B rests the {ire-,pot E, contained within but arranged at a distancefrom the casing G, which is fitted on the said plateB, this casing G being, in front, carried up to the pointn, figs.- 1 and 8, but the ,rear is carried higher up, soas to meet theplate H. v

. An oval casing, I, rests on the top of the'iire-pot, and 'meets the casing G at the points :e m, iigs. 2 and 8, so that there is a crescent-shaped air-chamber, K, between the rear ofthe casing I andthe rear ofthe casing G. This arrangement of plates will be best understood by referring to the perspective sketch, g. 8. i

Into this crescent-shaped air-chamber K passes (through openings t in the plate B) theair which had beenv admitted into the chamber E. v i Air also passes through openings into the space or chamber Ff, iig. 4,between the lire-pdt and the casing G, and passes thence directly into the chamber K, where it meets the air which passes4 from the chamber E, (See igs. 4 and 5.)' Y i The casing L'within which is the iire-chamber, has in front a number of openings,g, to which mica is tted, and the upper edge of the said casing is secured to the outer edge o't a plate, J,to the edge of an opening in which is fitted the lower edge-of a easing, L, g. 5.

The upper edge of the .casing G is secured to a plate, another casinggll/I, and that of another casing', N.

The two casingsL and N form together the crescent-shaped air chamber Q, best observed on reference to tig. 6, the two casngs being united at y y, so` that there maybe, through the opening between these points, a free passage. for the products of combustion from the fire-chamber to the space between the casings M andN, the products passing oit" from this space at the rear of the stove through the exit-opening M.

The plates H and J are a. short distance apart from eachother. The space between them, however, is closed H., and to thelatter is secured the lower edge of at the back by the casing G meeting the plate H. In front,l however, there is an opening, g, tigs. 1 and 5, for

the admission of external air to the crescent-shaped chamber Q.

The upper edges of the plates M, L,v and N are`iitted to the pluto R, in which is a central opening for ,the

4coal-1',eservoir S, which is suspended 'from the said plate,.and 'projects downwards. to about the middle of the-tirechamber, g. 3.

Nearits lower end this coal-reservoir is madedouble, andgan annular air-chamber, h, fox-'med there, a communieation between this chamber and the external air being formed by a pipe, v.

The lower end'of'the chamber is perforated'with small holes, for a purpose explained hereafter. A hotair or receiving-chamber, T, which has a 'perfect communication with the crescent-shaped chamber Q, is formed on the top of the stove, and within this chamber T is the curved conductor U,"for conveying the to the conductor, and within the latter-are' ledges for receiving the detachable ,coverplate W,-more fully referred' fuel to tho'reservoirS. v

In front of this portion of the'stove are sliding doorsYfwhieh can be made to open or close the entrance to hereafter. v v v V Onreference'to fig. 7, it'will bessen tti-at 'on the/outside and on cach side of the chamber T there' is'a receptacle for containing water, the receptacle 2, which has a close cover,- 3, communicating lthrough small openings with the'interior o f the receiving-ehamber T, to which the steam from the water is admitted. Thereceptarde 4, however, has no such communication with the said,` chamber T, and has any open-worli cover; hence it will be seen that ,the heated air which passes intol the room containing the stove, as well'as the heatedair which is carried upwards from the chamber T to the rooms above, is purified by the steam passing from the receptacles.

:Theabove-described stovepossesses several advantageous features, which may be generalized as follows:

First. The introduction. of large volumes of cold air at dierent points. Y I

Second. The thorough heating of 'the air thus -introduced,'by.causing it to circulate most advan tngeously throughout the stove, incontaet with theheating-surfaces. l

Third. The discharge of a large volume of thoroughly-heated air from the stove at a high velocity.

As to the first of these advantages, it will -be eeen that air is admitted at three points: diret, through open. ings e in the base-plate A; second, through the openings z'z' in front of'the stove; and, third, through the opening g above the fire-chember.

As to the sccondadvantage,namely, the proper distribution and 'circulation of this air within the stove, in contact with the heating-surfaces, it will be seen'thiat the air admitted through the openings i comes in contact withthe heated surface of the re-pot, passes round the same through the chamber F', where, in an' intenselyheated state, it meets and imparts a portion of its heat to the colder air passing upward through the openings e, above-referred to. V

As every portion of the casings L and N, which enclose the airehnmber Q, iig. 6, is exposed to intenso heat, the -aix' admitted to this chamber through the opening q must have a. correspondingly-intense heat imparted to it, and this heated air is -met by that passing from below, until the whole is delivered, at a high velocity, into the receiving-chamber T, to 'be delivered therefrom into the room containing the stove, or carried upwards. and discharged into the rooms'above, or the heated air may be distributed to different rooms.

These advantages are attained without any extraneous -tlues or air-passages, and in a comparatively contracted stove, and in a great mee-sure depend upon'the arrangement' and disposal of the peculiar crescentshaped airlchambers. y Y

A serious objection to coal-reservoirs has been the burning away ot` the lower ends, which are exposed directly to the action of the fr'e. To obviate this evil, we form on the lower end of the reservoir S the perfon rated air-chamberlz, which performs the twofold duty of protecting the lower end of the reservoir against the action of the fire, and oi' permitting jets of air to pass on to the ignited fuel, and insure its more perfect combastion, l

Another objection to the use of coalreservoirs in stoves has been the escape of gases, generated in the fuel, into the room where the stove is situated. To prevent this, we use the lid or cover W in the feeder U; not an vordinary cast-iron plate, resting on ledges, but a cover, turned, planed, or otherwise made perfectly true, and

resting on ledges prepared in a. similar manner, so that a perfectly-tight joint is insured, and the escape of gas thereby prevented. Y

Although we have frequently're'ferred in the above description to certain crescent-shaped chambers, it will be. readily understood that the precise form shown need not be adhered to 'in alleases, us the shape may be coni siderably modified without departing from the main peculiarities of our invention.

We claim asi our invention, and-desire to secure by Letters Patentv 1. p The chamber F, between the fire-pot and casing G, when the said chamber has, in frout,'openings for the admission of cold air, and communicates atthe rear with openings for the passage of another current of cold air, all substantially as and for the' purpose herein set forth'. i

2. `We claim the above in combination with the air-chamber K at the rear of the fire-chamber. 3. The plates J and H, between 'which is a passage, forming a communication between the lower crescentshaped chamber K and upperchamber Q, as described. y,

4. The air-opening q, communicating with the space between the plates J and H, asset forth.V 5. The crescenbshaped air-chamber-Q, open i'n front for the passa-'ge of the products of combustion from Within the space enclosed bythe inner casing of the said chamber round tothe rear of the seme, as set forth.

6. Openings for admitting cold airat three diierent points to the within-described chambers or their 3 77,549 Y equivalents, chamber, T.

7. The oolfresexvoir S, suspended within but et a disanc In testimony whereof, we have signed our names to this witnesses.

e from the 'chnmier Q, as set forth. specifcatohin the presencevof two subscribing DAVID STUART, LEWIS BRIDGE. :Witnesses: Y v l JOHN WHITE, C. B. PRICE.

in which the Aaix' is Heated, and by which-the heated' air is delivered in one voll'ume to receiving#Y 

